diff --git a/src/tfs/src/tdisk.c b/src/tfs/src/tdisk.c
index 28c836e5d95e8c19b47689dd39734be5acaf7b95..22601e48c3607fca53c91ea00b17551c791302bd 100644
--- a/src/tfs/src/tdisk.c
+++ b/src/tfs/src/tdisk.c
@@ -27,7 +27,7 @@ SDisk *tfsNewDisk(int level, int id, const char *dir) {
 
   pDisk->level = level;
   pDisk->id = id;
-  strncpy(pDisk->dir, dir, TSDB_FILENAME_LEN);
+  tstrncpy(pDisk->dir, dir, TSDB_FILENAME_LEN);
 
   return pDisk;
 }
diff --git a/src/tfs/src/tfs.c b/src/tfs/src/tfs.c
index 63fc090f006fbb0fcd629e5692285f7ca785c23e..f78535b8ed5bd17cb232fbcbc73f9831db099547 100644
--- a/src/tfs/src/tfs.c
+++ b/src/tfs/src/tfs.c
@@ -187,7 +187,7 @@ void tfsInitFile(TFILE *pf, int level, int id, const char *bname) {
 
   pf->level = level;
   pf->id = id;
-  strncpy(pf->rname, bname, TSDB_FILENAME_LEN);
+  tstrncpy(pf->rname, bname, TSDB_FILENAME_LEN);
 
   char tmpName[TMPNAME_LEN] = {0};
   snprintf(tmpName, TMPNAME_LEN, "%s/%s", DISK_DIR(pDisk), bname);
@@ -230,15 +230,15 @@ void *tfsDecodeFile(void *buf, TFILE *pf) {
 void tfsbasename(const TFILE *pf, char *dest) {
   char tname[TSDB_FILENAME_LEN] = "\0";
 
-  strncpy(tname, pf->aname, TSDB_FILENAME_LEN);
-  strncpy(dest, basename(tname), TSDB_FILENAME_LEN);
+  tstrncpy(tname, pf->aname, TSDB_FILENAME_LEN);
+  tstrncpy(dest, basename(tname), TSDB_FILENAME_LEN);
 }
 
 void tfsdirname(const TFILE *pf, char *dest) {
   char tname[TSDB_FILENAME_LEN] = "\0";
 
-  strncpy(tname, pf->aname, TSDB_FILENAME_LEN);
-  strncpy(dest, dirname(tname), TSDB_FILENAME_LEN);
+  tstrncpy(tname, pf->aname, TSDB_FILENAME_LEN);
+  tstrncpy(dest, dirname(tname), TSDB_FILENAME_LEN);
 }
 
 // DIR APIs ====================================
@@ -344,7 +344,7 @@ TDIR *tfsOpendir(const char *rname) {
   }
 
   tfsInitDiskIter(&(tdir->iter));
-  strncpy(tdir->dirname, rname, TSDB_FILENAME_LEN);
+  tstrncpy(tdir->dirname, rname, TSDB_FILENAME_LEN);
 
   if (tfsOpendirImpl(tdir) < 0) {
     free(tdir);
diff --git a/src/tsdb/inc/tsdbFile.h b/src/tsdb/inc/tsdbFile.h
index f1e2422e45b195e3874518132051ded67a776449..792efcdb2e0cc0245203d91e80369205cab74d56 100644
--- a/src/tsdb/inc/tsdbFile.h
+++ b/src/tsdb/inc/tsdbFile.h
@@ -334,7 +334,7 @@ static FORCE_INLINE int tsdbOpenDFileSet(SDFileSet* pSet, int flags) {
 
 static FORCE_INLINE void tsdbRemoveDFileSet(SDFileSet* pSet) {
   for (TSDB_FILE_T ftype = 0; ftype < TSDB_FILE_MAX; ftype++) {
-    tsdbRemoveDFile(TSDB_DFILE_IN_SET(pSet, ftype));
+    (void)tsdbRemoveDFile(TSDB_DFILE_IN_SET(pSet, ftype));
   }
 }
 
diff --git a/src/tsdb/src/tsdbCommit.c b/src/tsdb/src/tsdbCommit.c
index a1ed0796a6e628a55ebe81fd87396ada990b7e73..02dd2d1ca40a04dd1102f884bae528916b522272 100644
--- a/src/tsdb/src/tsdbCommit.c
+++ b/src/tsdb/src/tsdbCommit.c
@@ -164,7 +164,7 @@ static int tsdbCommitMeta(STsdbRepo *pRepo) {
         tsdbError("vgId:%d failed to update META record, uid %" PRIu64 " since %s", REPO_ID(pRepo), pAct->uid,
                   tstrerror(terrno));
         tsdbCloseMFile(&mf);
-        tsdbApplyMFileChange(&mf, pOMFile);
+        (void)tsdbApplyMFileChange(&mf, pOMFile);
         // TODO: need to reload metaCache
         return -1;
       }
@@ -304,7 +304,7 @@ static int tsdbCommitTSData(STsdbRepo *pRepo) {
   SDFileSet *pSet = NULL;
   int        fid;
 
-  memset(&commith, 0, sizeof(SMemTable *));
+  memset(&commith, 0, sizeof(commith));
 
   if (pMem->numOfRows <= 0) {
     // No memory data, just apply retention on each file on disk
@@ -399,9 +399,9 @@ static void tsdbEndCommit(STsdbRepo *pRepo, int eno) {
   if (pRepo->appH.notifyStatus) pRepo->appH.notifyStatus(pRepo->appH.appH, TSDB_STATUS_COMMIT_OVER, eno);
 
   SMemTable *pIMem = pRepo->imem;
-  tsdbLockRepo(pRepo);
+  (void)tsdbLockRepo(pRepo);
   pRepo->imem = NULL;
-  tsdbUnlockRepo(pRepo);
+  (void)tsdbUnlockRepo(pRepo);
   tsdbUnRefMemTable(pRepo, pIMem);
   tsem_post(&(pRepo->readyToCommit));
 }
@@ -1136,12 +1136,12 @@ static int tsdbMoveBlock(SCommitH *pCommith, int bidx) {
 }
 
 static int tsdbCommitAddBlock(SCommitH *pCommith, const SBlock *pSupBlock, const SBlock *pSubBlocks, int nSubBlocks) {
-  if (taosArrayPush(pCommith->aSupBlk, pSupBlock) < 0) {
+  if (taosArrayPush(pCommith->aSupBlk, pSupBlock) == NULL) {
     terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
     return -1;
   }
 
-  if (pSubBlocks && taosArrayPushBatch(pCommith->aSubBlk, pSubBlocks, nSubBlocks) < 0) {
+  if (pSubBlocks && taosArrayPushBatch(pCommith->aSubBlk, pSubBlocks, nSubBlocks) == NULL) {
     terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
     return -1;
   }
@@ -1379,7 +1379,7 @@ static int tsdbSetAndOpenCommitFile(SCommitH *pCommith, SDFileSet *pSet, int fid
                   tstrerror(terrno));
 
         tsdbCloseDFileSet(pWSet);
-        tsdbRemoveDFile(pWHeadf);
+        (void)tsdbRemoveDFile(pWHeadf);
         if (pCommith->isRFileSet) {
           tsdbCloseAndUnsetFSet(&(pCommith->readh));
           return -1;
diff --git a/src/tsdb/src/tsdbFS.c b/src/tsdb/src/tsdbFS.c
index cbff4fbeaa6907c83b5836d6039cbfc23a62168b..a9e74cb229df24800bd920186113669164ca7dc7 100644
--- a/src/tsdb/src/tsdbFS.c
+++ b/src/tsdb/src/tsdbFS.c
@@ -380,7 +380,7 @@ static int tsdbSaveFSStatus(SFSStatus *pStatus, int vid) {
     if (taosWrite(fd, pBuf, fsheader.len) < fsheader.len) {
       terrno = TAOS_SYSTEM_ERROR(errno);
       close(fd);
-      remove(tfname);
+      (void)remove(tfname);
       taosTZfree(pBuf);
       return -1;
     }
@@ -413,7 +413,7 @@ static void tsdbApplyFSTxnOnDisk(SFSStatus *pFrom, SFSStatus *pTo) {
   sizeTo = taosArrayGetSize(pTo->df);
 
   // Apply meta file change
-  tsdbApplyMFileChange(pFrom->pmf, pTo->pmf);
+  (void)tsdbApplyMFileChange(pFrom->pmf, pTo->pmf);
 
   // Apply SDFileSet change
   if (ifrom >= sizeFrom) {
@@ -853,7 +853,7 @@ static int tsdbScanRootDir(STsdbRepo *pRepo) {
       continue;
     }
 
-    tfsremove(pf);
+    (void)tfsremove(pf);
     tsdbDebug("vgId:%d invalid file %s is removed", REPO_ID(pRepo), TFILE_NAME(pf));
   }
 
@@ -879,7 +879,7 @@ static int tsdbScanDataDir(STsdbRepo *pRepo) {
     tfsbasename(pf, bname);
 
     if (!tsdbIsTFileInFS(pfs, pf)) {
-      tfsremove(pf);
+      (void)tfsremove(pf);
       tsdbDebug("vgId:%d invalid file %s is removed", REPO_ID(pRepo), TFILE_NAME(pf));
     }
   }
@@ -939,7 +939,7 @@ static int tsdbRestoreMeta(STsdbRepo *pRepo) {
     if (strcmp(bname, tsdbTxnFname[TSDB_TXN_TEMP_FILE]) == 0) {
       // Skip current.t file
       tsdbInfo("vgId:%d file %s exists, remove it", REPO_ID(pRepo), TFILE_NAME(pf));
-      tfsremove(pf);
+      (void)tfsremove(pf);
       continue;
     }
 
@@ -1045,7 +1045,7 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
 
     int code = regexec(&regex, bname, 0, NULL, 0);
     if (code == 0) {
-      if (taosArrayPush(fArray, (void *)pf) < 0) {
+      if (taosArrayPush(fArray, (void *)pf) == NULL) {
         terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
         tfsClosedir(tdir);
         taosArrayDestroy(fArray);
@@ -1055,7 +1055,7 @@ static int tsdbRestoreDFileSet(STsdbRepo *pRepo) {
     } else if (code == REG_NOMATCH) {
       // Not match
       tsdbInfo("vgId:%d invalid file %s exists, remove it", REPO_ID(pRepo), TFILE_NAME(pf));
-      tfsremove(pf);
+      (void)tfsremove(pf);
       continue;
     } else {
       // Has other error
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index 8124a0e3b5984eecee1f0934a385be56d5bd3b61..ac33096aaeb2536a70b5226ce1b5bdb8856903b8 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -523,7 +523,7 @@ static int tsdbApplyDFileChange(SDFile *from, SDFile *to) {
           tsdbRollBackDFile(to);
         }
       } else {
-        tsdbRemoveDFile(from);
+        (void)tsdbRemoveDFile(from);
       }
     }
   }
diff --git a/src/tsdb/src/tsdbReadImpl.c b/src/tsdb/src/tsdbReadImpl.c
index 572706d45e6a085f44ffd0a089dc28256255e33e..7212ae1636400b0ce45ef27306356f658fb3f90d 100644
--- a/src/tsdb/src/tsdbReadImpl.c
+++ b/src/tsdb/src/tsdbReadImpl.c
@@ -139,7 +139,7 @@ int tsdbLoadBlockIdx(SReadH *pReadh) {
     ptr = tsdbDecodeSBlockIdx(ptr, &blkIdx);
     ASSERT(ptr != NULL);
 
-    if (taosArrayPush(pReadh->aBlkIdx, (void *)(&blkIdx)) < 0) {
+    if (taosArrayPush(pReadh->aBlkIdx, (void *)(&blkIdx)) == NULL) {
       terrno = TSDB_CODE_TDB_OUT_OF_MEMORY;
       return -1;
     }
diff --git a/src/util/inc/tchecksum.h b/src/util/inc/tchecksum.h
index 495aaf33e8fca3594c45f1cfe6fc6acc59fa59d5..12ca3a54432187ea5af0ac24208e81d5028359bb 100644
--- a/src/util/inc/tchecksum.h
+++ b/src/util/inc/tchecksum.h
@@ -47,7 +47,6 @@ static FORCE_INLINE int taosCalcChecksumAppend(TSCKSUM csi, uint8_t *stream, uin
 }
 
 static FORCE_INLINE int taosCheckChecksum(const uint8_t *stream, uint32_t ssize, TSCKSUM checksum) {
-  if (ssize < 0) return 0;
   return (checksum == (*crc32c)(0, stream, (size_t)ssize));
 }